Move your cursor across the flow: scattered packets fall into line.
I turn complex business processes into scalable software products.
Hakan Özalan
Areas of expertise
Four lanes, one system. Each is a topic cluster fed by articles, projects and case studies.
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E-commerce and Marketplace Integrations
Marketplace APIs, order, stock and price sync, supply and shipping flows.
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SaaS Development
Multi-tenant architecture, billing, product infrastructure and running SaaS at scale.
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AI Automation
LLM integration, RAG, human-in-the-loop automation and evaluating AI output.
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Backend Engineering
PHP and Python, async processing, MySQL and PostgreSQL, API design and reliability.
How I work
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Understand the process
Before writing code I map how the work really flows, who needs what and where it gets stuck.
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Build the model
Orders, stock, prices and messages get one shared data model; every source connects to it.
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Connect safely
External systems are integrated with connections that survive rate limits, failures and duplicate events.
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Automate
Repetitive work becomes workflows, with human-approved AI steps where they help.
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Observe and improve
Logs, alerts and reconciliation reports keep the system’s health visible, and measurement drives what changes.
Work together
Write about a collaboration, consulting or a job opportunity.